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Category name Best seller rank 50th book's rank Median sales($) Median price ($) Volatility (%) New releases (%) Self pub.(%) KDP Select (%) Competition
Kindle eBooks > Science & Math > Astronomy & Space Science 828 71,164 $1,664 $8.49 100% 0% 25% 23% N/A
Kindle eBooks > Science & Math > Astronomy & Space Science > Astrophysics & Space Science 3,405 98,156 $181 $6.49 90% 0% 20% 23% ~ 4,000
Kindle eBooks > Science & Math > Astronomy & Space Science > Cosmology 700 115,495 $755 $8.99 95% 5% 25% 27% ~ 2,000
Kindle eBooks > Science & Math > Astronomy & Space Science > Astronomy 2,204 164,565 $324 $5.8 100% 0% 30% 37% ~ 3,000
Kindle eBooks > Science & Math > Astronomy & Space Science > Aeronautics & Astronautics 11,608 191,672 $153 $5.49 90% 5% 30% 33% ~ 3,000
Kindle eBooks > History > Science & Medicine > Astronomy 9,257 192,681 $279 $9.99 100% 5% 0% 30% ~ 1,000
Kindle eBooks > Nonfiction > Children's Nonfiction > Science, Nature & How It Works > Astronomy 4,887 201,993 $335 $5.99 65% 0% 20% 33% ~ 868
Kindle eBooks > Science & Math > Astronomy & Space Science > UFOs 24,154 278,562 $279 $9.99 100% 15% 20% 40% ~ 555
Kindle eBooks > Children's eBooks > Science, Nature & How It Works > Astronomy & Space 4,887 532,136 $447 $7.99 85% 5% 20% 27% ~ 1,000
Kindle eBooks > Science & Math > Astronomy & Space Science > Star-Gazing 56,253 637,643 $279 $9.99 100% 10% 30% 37% ~ 792
Kindle eBooks > Science & Math > Astronomy & Space Science > Universe 179,777 867,444 $0 $5.97 100% 25% 65% 83% ~ 41
Kindle eBooks > Science & Math > Astronomy & Space Science > Solar System 171,478 1,140,091 $0 $4.99 100% 5% 80% 83% ~ 16